Loudspeaker standard：4Ω 
output power：3W 
frequency response：90Hz-20KHz  
Susceptiveness：80db±2db 
signal to noise ratio：≥80dB  
degree of distortion：≤0.3%
 

【SD card/USB flash disk music player】built-in SD card/USB flash disk intelligent card decoding, can be directly played T-F card and U disk, mobile phones and other USB storage device stored MP3  music file format.
【Super bass】Built-in annular radiation device, Super sound pressure dynamic gain,feeling fully to listen, high resilience.
【fashion tragbar】small and exquisite,fashion and delicacy, convenient to carry.
【dual mode power supply】Support computer USB power supply or lithium battery power supply, double power supply mode free choice.
【Breakpoint memory played】Automatic memory of the last time you quit playing chapter,SD card/USB storage devices play independent memory repertoire, Not interfere with each other.
【Intelligent quick charge】Speakers USB power microcomputer intelligent automatic quick charge of lithium battery.
【AUX input】Stereo audio input, Shuttle notebook easily, digital music player, GOGOTV etc widely audio-visual products of various kinds of audio source.